The Tories will lose the Corby by-election in November with a swing big enough
to give Labour a sizeable majority if repeated at a general election,
according to a new poll published by Lord Ashcroft.

Labour have pulled 15 points ahead in the Northamptonshire seat, according to
the poll, securing 52 per cent of the vote — significantly better than their
position nationally — with the Conservatives on 37 and Lib Dems on 7 per
cent.